21359855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{8263}}^1$

素因数の和:8326

約数の個数: 16

約数和(自身を含む): 28560384

約数和(自身を除く): 7200529

約数列:

[1, 5, 11, 47, 55, 235, 517, 2585, 8263, 41315, 90893, 388361, 454465, 1941805, 4271971, 21359855]

約数ペア:

[(1, 21359855), (5, 4271971), (11, 1941805), (47, 454465), (55, 388361), (235, 90893), (517, 41315), (2585, 8263)]